Bug#643301: linux-image-3.0.0-1-rt-amd64: Suspend to ram hangs

[Jonathan Nieder <jrnieder@gmail.com>]

(+cc: Uwe Kleine-König)
John O'Hagan wrote:

> This is a little out of my comfort zone, but I did follow the
> procedure in the first link, running the sequential tests with
> /sys/power/pm_test. "freezer", "devices" and "platform" tests all
> work, the failure occurs with "processors", both for STR and STD.

Ok, excellent - so this is a power management core problem or
something nearby.

One final test, and then we should move this upstream.  Can you
reproduce the freeze with 3.0.0-4 from sid, too?  It updates the -rt
patchset to 3.0.4-rt14 (though I don't see any obviously relevant
fixes there).

If that still reproduces it, please send a summary of your
observations (freezes on suspend and hibernate, only happens with the
-rt patchset, even sysrq does not work in the frozen state, happens
with "processors" test described in basic-pm-debugging.txt but not
"platform", dmesg from bootup attached) to
linux-rt-users@vger.kernel.org (no subscription needed, since the
convention is to always reply-to-all there) and cc us or let us know
the message-id so we can track it.

Thanks much,
Jonathan